Mossbauer effect probe of local Jahn-Teller distortion in Fe-doped colossal magnetoresistive manganites

被引：19
作者：
Cheng, ZH
Wang, ZH
Di, NL
Kou, ZQ
Wang, GJ
Li, RW
Lu, Y
Li, QA
Shen, BG
Dunlap, RA
机构：
[1] Chinese Acad Sci, State Key Lab Magnetism, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Int Ctr Quantum Struct, Beijing 100080, Peoples R China
[3] Dalhousie Univ, Dept Phys, Halifax, NS B3H 3J5, Canada
来源：
APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 08期
关键词：
D O I：
10.1063/1.1605232
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The local structure of the Fe-doped La1-xCaxMnO3 (x=0.00-1.00) compounds has been investigated by means of Mossbauer spectroscopy. Fe-57 Mossbauer spectra provide direct evidence of Jahn-Teller distortion in these manganites. On the basis of the Mossbauer results, the Jahn-Teller coupling was estimated. It is noteworthy that the Ca-concentration dependence of the Jahn-Teller coupling strength is very consistent with the magnetic phase diagram. Our results reveal that Mossbauer spectroscopy cannot only detect the local structural distortion, but also provide a technique to investigate the Jahn-Teller coupling of Fe-doped La1-xCaxMnO3 colossal magnetoresistive perovskites. (C) 2003 American Institute of Physics.
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页码：1587 / 1589
页数：3
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